Combined electric motor and fan



- i W. fi. mz%kg N'q Model.)

. H. H. 'BLADES-. COMBINE-D ELECTRIC MOTOR AND FAN.

No. 575,255. Patented Dec. 20 1887.

WITNESSES .dttprney 2 Sheets-Sheet 1.

"UNITED STATES PATENT OFFICE.

HA YH. BLADES, OF DETROIT, MICHIGAN.

COMBINED ELECTRIC MOTOR AND FAN.

SPECIFICATION forming part of Letters Patent No. 375,355; dated December 20,1887,

Application filed February 21, 1887. Serial No. 228,401. (No model.)

.To all whom itmay concern:

Be it known that I, HARRY H. BLADES, of Detroit, county of Wayne, State of Michigan, have invented a new and useful Improvement in Combined. Electric Motors and Fans; and I declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use it, reference beihg had to the accompanying drawings, which *form a part ofi'ft'bis specification.

My ih'vention consists of the combinations of devices and appliances hereinafter specified, and more particularly pointed out in the claims:

In the drawings, Figure 1 is-a'section on avcrtical plane passed lengthwise of the'shaft Fig.

ofa machine embodying my invention. 2is alongitudinal section on a vertical plane at right'angles to Fig. 1. Fig. 3 is a side elevation. Fig. 4 is asection, on avertical plane in the direction of the shaft, of a variation of my invention, in which the field-pieces are wound in the usualfway.

It is thepurpose of my invention, primarily, to combine a fan with a motor directly, so that theblades of the fan shall project directly from the periphery of the armature in combining the same with a suitable fan-casewhereby the I will describe first that construction which dispenses with field-magnets.

Ais the revolving armature; 13, its shaft; 0, its commutator; D, its brushes or other usual means for leading the-current to and from the bobbins of the armature.

E represents field-pieces, of soft iron, which are arranged close to the armature, and are preferably so constructed to embrace asfar as practicable the armature-ring at the points opposite the said field-pieces. These fieldpieces, it will be observed, as shown in Figs.

1, 2, and 3, are not wound with wire, so that they are not field-magnets, but simply soft-iron field-pieces operating in thesame manner that the field-magnets would operate, except with a less intensity.

F are the usual binding posts for onnecting the motor with the battery or prim y gener ator.

His '2. fan-case of any suitable form, and H.

its discharge-conduit. This discharge-conduit may lead to the tuyere-box of a bl'acksmiths is required. r

. A device constructed in this manner obviates to a large extent the expense usually attendant on combining the fan with a motor. So, also, there are the least weight and quantity of material, and the whole mechanism is forge or to any other locality where the blast grouped in the least possible space, requiring no length of shaft only what support the armature. p

I would have it understood that'the fanblades may be made smaller or larger and have any suitable shape to correspond with the requirement of any particular use to which it is to be applied, and correspond also with. the strength of the current employed to drive the motor.

The same apparatus as above explained may be provided with a winding of wire upon the field-pieces, so as to convert them into field-magnets. vice is illustrated in Fig. 4 of the drawings, in which J represents the winding upon the field-magnets.

is necessary to It is of course apparent that with the fanblades made in suitable shape and with a case opening straight through from side to side, inclosing the motor and the fan-blades, the de vice may be thereby adapted for use as a ventilator-fan in the usual way.

What I claim is- 1. An electric fan for forges, 8m, consisting of the combination, withthe armature of an electric motor, of fan-blades secured directly Such construction of the deto the periphery of the armature and a suitconnected directly with the periphery of the IO able fan-case for inclosing the armature and armature, substantially as and for the purfan-blades and for confining and giving direcposes described. tion to the blast, substantially as and for the I In testimony. whereof I sign this specifica- 5 purpose described. tion in the presence of two witnesses.

2. An electrical fan consisting of one or more HARRY H. BLADES. unwound field-pieces of soft iron, an armature Witnesses: I adapted to revolve with. its bobbins in close N. S. WRIGHT,

proximity to said field-pieces, and fan-blades M. B. ODOGHERTY. 

